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1991 BMW 850i

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 1991 BMW 850i

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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XS Power XP950

950W 35 Ah Absorbent Glass Mat (AGM) Secondary Battery

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950W 35 Ah Absorbent Glass Mat (AGM) Secondary Battery

• 12-volt Absorbent Glass Mat (AGM) Secondary Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 950W car audio stereo systems
• Compatible with most vehicle applications

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• 12-volt Absorbent Glass Mat (AGM) Secondary Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 950W car audio stereo systems
• Compatible with most vehicle applications

Sundown Audio U-6.5SW D4 6.5" (U65SWD4)

1000W Peak (500W RMS) 6.5" U Series Dual 4-ohm Car Subwoofer (SW-UV16.5D4)

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1000W Peak (500W RMS) 6.5" U Series Dual 4-ohm Car Subwoofer (SW-UV16.5D4)

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 5.71"
• Sensitivity: 78.14 dB

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NVX - Worth the Envy - Direct to Consumer Car Audio

Rockford Fosgate Prime R2 R2-1200X1

1200W RMS Class D Prime Series Monoblock Car Amplifier

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1200W RMS Class D Prime Series Monoblock Car Amplifier

• 400 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Available Offers (2) for Rockford Fosgate Prime R2 R2-1200X1
FREE NVX Amp Kit at Checkout!
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Used from: $382.49

Escort MAX 360c MKII (360cmkii)

Radar and Laser Detector with Wi-Fi, GPS, Bluetooth, and App Control

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Radar and Laser Detector with Wi-Fi, GPS, Bluetooth, and App Control

• Multi Band Radar and Laser Detector
• Works with Apple CarPlay and Android Auto
• AutoLearn Intelligence GPS-based technology
• Dual-band Wi-Fi for software updates
• True 360-degree awareness
• Variable speed sensitivity
• Supports Drive Smarter software
• M2 and Shifter compatible

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• Multi Band Radar and Laser Detector
• Works with Apple CarPlay and Android Auto
• AutoLearn Intelligence GPS-based technology
• Dual-band Wi-Fi for software updates
• True 360-degree awareness
• Variable speed sensitivity
• Supports Drive Smarter software
• M2 and Shifter compatible

Limited time!

JL Audio BassWedge CP110-W0v3

Single 10" BassWedge Loaded Ported Enclosure with Gray Carpet Finish

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Single 10" BassWedge Loaded Ported Enclosure with Gray Carpet Finish

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

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• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

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NVX VAD22008 v2 (VAD22008v2)

2200W RMS Class D V-Series 8-Channel Car, Marine and Powersports Amplifier

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2200W RMS Class D V-Series 8-Channel Car, Marine and Powersports Amplifier

• 150 watts x 6 channel + 250 watts x 2 channels @ 4 ohm
• 225 watts x 6 channel + 400 watts x 2 channels @ 2 ohm
• Bridged: 450 watts x 3 channel + 850 watts x 1 channel @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel Amplifier

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• 150 watts x 6 channel + 250 watts x 2 channels @ 4 ohm
• 225 watts x 6 channel + 400 watts x 2 channels @ 2 ohm
• Bridged: 450 watts x 3 channel + 850 watts x 1 channel @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel Amplifier

Crimestopper SP-402

1-Way Remote Start Keyless Entry Car Alarm System with (2) 1500 ft Range 5-Button LED Transmitters

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1-Way Remote Start Keyless Entry Car Alarm System with (2) 1500 ft Range 5-Button LED Transmitters

• 1-Way Remote Car Starter
• 5-Button LED Transmitter
• 1500 feet of range (0.28 miles)
• Dual 2-way data port
• Multi-vehicle functionality

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• 1-Way Remote Car Starter
• 5-Button LED Transmitter
• 1500 feet of range (0.28 miles)
• Dual 2-way data port
• Multi-vehicle functionality

Viper 7654V (Requires Programming)

Responder LC3/HD Replacement Companion Remote Control Compatible with Viper 5501, 5901 and 7901

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Responder LC3/HD Replacement Companion Remote Control Compatible with Viper 5501, 5901 and 7901

• Replacement Companion Remote Control
• White and Black Design
• 5 Rubberized Buttons
• Super Code 1-Way LE Transmitter
• Confirms the Commands you Send to the Vehicle with Bright LEDs
• Uses the 2016 3V Round Lithium Battery

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• Replacement Companion Remote Control
• White and Black Design
• 5 Rubberized Buttons
• Super Code 1-Way LE Transmitter
• Confirms the Commands you Send to the Vehicle with Bright LEDs
• Uses the 2016 3V Round Lithium Battery

Alpine RUE-4360

Wireless Audio Remote Control for Remote-Ready Alpine Stereos

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Wireless Audio Remote Control for Remote-Ready Alpine Stereos

• Wireless remote control for remote-ready Alpine stereos
• 20 soft push-buttons for variety of control functions
• Siri voice assistant activation on paired iPhone
• Voice recognition mode when paired with other smartphones
• Utilizes IR (Infrared) to send commands wirelessly

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• Wireless remote control for remote-ready Alpine stereos
• 20 soft push-buttons for variety of control functions
• Siri voice assistant activation on paired iPhone
• Voice recognition mode when paired with other smartphones
• Utilizes IR (Infrared) to send commands wirelessly

Belva BRT038

0/1 Gauge Ring Terminals, 3/8" Opening with Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

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0/1 Gauge Ring Terminals, 3/8" Opening with Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

• Ring Terminals
• 3/8" Opening
• 0/1 Gauge
• 3 Red & 2 Black • Nickel Plated
• Resealable Polybag

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• Ring Terminals
• 3/8" Opening
• 0/1 Gauge
• 3 Red & 2 Black • Nickel Plated
• Resealable Polybag

NVX NDA15001

3000W Peak (1500W RMS) Class D N-Series Monoblock Car Amplifier with Bass Remote

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3000W Peak (1500W RMS) Class D N-Series Monoblock Car Amplifier with Bass Remote

• 670 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Available Offers (3) for NVX NDA15001
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Prime Time! Save 20% at Checkout!
List price $287.99
-31% $199.99
$159.99 with coupon | Price details
2026-06-28 23:59:00
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Purchase $400 or More of NVX and Save 15%!
2026-07-27 11:08:20

Metra 44-EC144 Antenna Extension

12 ft. (144") Antenna Extension Cable with Impedance Matching Capacitors

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12 ft. (144") Antenna Extension Cable with Impedance Matching Capacitors

• Extension cable perfect when installing an FM modulated multi-disc CD changer, or other FM modulated tuner like a Satellite Radio box
• Also works with hideaway "brain" units from multimedia receivers

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• Extension cable perfect when installing an FM modulated multi-disc CD changer, or other FM modulated tuner like a Satellite Radio box
• Also works with hideaway "brain" units from multimedia receivers

Energie PR4800

12V 110Ah Absorbent Glass Mat (AGM) Car Battery

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12V 110Ah Absorbent Glass Mat (AGM) Car Battery

• 12-volt Absorbent Glass Mat Car Audio Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 4800W car audio stereo systems
• Left positive terminal

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• 12-volt Absorbent Glass Mat Car Audio Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 4800W car audio stereo systems
• Left positive terminal

Limited time!

NVX XW0WH20

20 ft 1/0-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (White)

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20 ft 1/0-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (White)

• 20 feet 1/0 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: White

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• 20 feet 1/0 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: White

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Belva BRT438

4 Gauge Ring Terminals, 3/8" Opening with Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

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4 Gauge Ring Terminals, 3/8" Opening with Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

• Ring Terminals
• 3/8" Opening
• 4 Gauge
• 3 Red & 2 Black
• Nickel Plated
• Resealable Polybag

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• Ring Terminals
• 3/8" Opening
• 4 Gauge
• 3 Red & 2 Black
• Nickel Plated
• Resealable Polybag

XpressKit DLOADER4

OBD2 Plug-in Bluetooth DirectLoader Wireless Bootloader Programming Tool

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OBD2 Plug-in Bluetooth DirectLoader Wireless Bootloader Programming Tool

• OBD2 plug in Bluetooth wireless bootloader
• Combines XKLOADER2 and XKLOADER3 functionality
• Supports DS4 echosystem Bluetooth flashing
• Includes all harness and programming tools necessary

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• OBD2 plug in Bluetooth wireless bootloader
• Combines XKLOADER2 and XKLOADER3 functionality
• Supports DS4 echosystem Bluetooth flashing
• Includes all harness and programming tools necessary

Viper 5908V

2-Way Remote Start, Keyless Entry and Car Alarm System with (2) 1 Mile Range 5 Button Transmitters

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2-Way Remote Start, Keyless Entry and Car Alarm System with (2) 1 Mile Range 5 Button Transmitters

• 2-Way Remote Start, Keyless Entry and Car Alarm System
• Includes (1) 2-way LCD transmitter and (1) 1-way sidekick remote control transmitter
• 1 mile range
• Antenna with integrated valet switch and LED

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• 2-Way Remote Start, Keyless Entry and Car Alarm System
• Includes (1) 2-way LCD transmitter and (1) 1-way sidekick remote control transmitter
• 1 mile range
• Antenna with integrated valet switch and LED

Rockford Fosgate PMX-ANT Antenna

AM/FM/WB Amplified 12V Antenna

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AM/FM/WB Amplified 12V Antenna

• PMX-ANT AM/FM/WB Amplified 12V Antenna
• Universal AM/FM/WB Antenna
• Omnidirectional
• Quick Power Connect for Easy Installation

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• PMX-ANT AM/FM/WB Amplified 12V Antenna
• Universal AM/FM/WB Antenna
• Omnidirectional
• Quick Power Connect for Easy Installation

Stinger SwitchHub (SPXSH440)

100A 4-Channel High Current Solid State Relay System

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100A 4-Channel High Current Solid State Relay System

• 4-Channel SwitchHub Solid-State Relay
• Single 40-amp output and triple 20-amp outputs
• 100-amp combined continuous capacity
• Outputs can be triggered independently

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List price $158.99
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• 4-Channel SwitchHub Solid-State Relay
• Single 40-amp output and triple 20-amp outputs
• 100-amp combined continuous capacity
• Outputs can be triggered independently

Cobra SC250R

3" Dual View 4K High-Definition Dash Camera with Bluetooth, WiFi and GPS

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3" Dual View 4K High-Definition Dash Camera with Bluetooth, WiFi and GPS

• 3" Dual View Dash Camera with 4K HD Video Resolution
• Includes a rear-view accessory camera
• Apple CarPlay and Android Auto support
• Loop-cycle recording
• Front Camera Resolution: 4096p x 2160p
• Rear Camera Resolution: 1920 x 1080p

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$259.95

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• 3" Dual View Dash Camera with 4K HD Video Resolution
• Includes a rear-view accessory camera
• Apple CarPlay and Android Auto support
• Loop-cycle recording
• Front Camera Resolution: 4096p x 2160p
• Rear Camera Resolution: 1920 x 1080p

NVX - Worth the Envy - Direct to Consumer Car Audio

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    FAQ for Universal-Fit Audio & Electronics in 1991 850i

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1991 BMW 850i?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your 850i.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.